I'm afraid you forgot (in 2012) the 52, 58 and 59 all run on Lawrence. After the 52 and 58 merged, it's 43.9k.
Sheppard East with the 85 (29k) and 190 (10k) only makes 39k making the Lawrence West corridor busier.
See for your self.
https://www.ttc.ca/PDF/Transit_Planning/Ridership_and_service_stats_2014.pdf
I expect ridership will drop by 10k once the Crosstown opens. Still, with growth in a decade, Lawrence west will still have close to 40k riders and does deserve some sort of bus jump lanes. I would argue Bathrust, Dufferin and Jane could use some but the roadway is narrower than Lawrence. Finch East is another corridor that needs bus jump lanes.